1 files changed, 30 insertions, 0 deletions
diff --git a/cast/standalone_sender/streaming_encoder_util.cc b/cast/standalone_sender/streaming_encoder_util.cc
new file mode 100644
index 00000000..9ead2bd9
--- /dev/null
+++ b/cast/standalone_sender/streaming_encoder_util.cc
@@ -0,0 +1,30 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "cast/standalone_sender/streaming_encoder_util.h"
+
+#include <string.h>
+
+#include <algorithm>
+
+namespace openscreen {
+namespace cast {
+void CopyPlane(const uint8_t* src,
+               int src_stride,
+               int num_rows,
+               uint8_t* dst,
+               int dst_stride) {
+  if (src_stride == dst_stride) {
+    memcpy(dst, src, src_stride * num_rows);
+    return;
+  }
+  const int bytes_per_row = std::min(src_stride, dst_stride);
+  while (--num_rows >= 0) {
+    memcpy(dst, src, bytes_per_row);
+    dst += dst_stride;
+    src += src_stride;
+  }
+}
+}  // namespace cast
+}  // namespace openscreen